3

When I comment is some question or answer in this including all SE sites I noticed that it shows suggestion if I start with @.

But, it is boring to me to use mouse to select the commenter's name.

Is there any short key to insert the name?

6

You can use the TAB key to switch between possible suggestions which should auto-complete the full @-mention.

enter image description here

For more details on @-replies, see How do comment @replies work?

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